Homework Help:
ElectroStatics Question

1. The problem statement, all variables and given/known data
A small conducting sphere of mass M is attached to a string of length L. It is at rest in a uniform electrical field of magnitude E directed due right. The sphere has a charge of Q and the string makes a 30 degree angle with the electric field.

a) should be correct
b) what you want is the magnitude of the uniform electric field, not the field produced by the point charge, might want to use newton third law to relate columb force to tension in part a
c) if you remove the string what are the forces acting on the sphere?